Low-speed hydraulic power-assisted barring clutch mechanism of gas turbine

Abstract

The utility model relates to the technical field of gas turbine barring, in particular to a low-speed hydraulic power-assisted barring clutch mechanism of a gas turbine, which comprises a clutch inner ring sleeved on the outer side of a barring central shaft, at least four groups of positioning pins, a clutch outer ring sleeved on the outer side of the clutch inner ring, and a gap arranged between the clutch outer ring and the clutch inner ring. The elastic supporting pieces are used for supporting the positioning pin and enabling the positioning pin to be clamped with a positioning hole formed in the outer side of the barring center shaft, and the pressing plate structure is arranged in the interval and used for pushing the elastic supporting pieces to enable the positioning pin to be separated from the positioning hole when the clutch outer ring rotates anticlockwise. A clutch mechanism with a positioning pin and a pressing plate structure is adopted, the barring center shaft is controlled through forward and reverse rotation, torque can be stably transmitted during closing, normal operation of the barring is ensured, the structure is simple and compact, and when faults occur, workers can conveniently and rapidly position and repair the barring center shaft.

Description

Technical Field

[0001] This utility model relates to the field of gas turbine turning gear technology, and in particular to a low-speed hydraulic power-assisted turning gear clutch mechanism for gas turbines. Background Technology

[0002] The main function of the clutch mechanism is to connect and disconnect the turning gear and the gas turbine rotor. When turning is required, the clutch mechanism engages, allowing the hydraulic motor to drive the gas turbine rotor to rotate; when turning is not required, the clutch mechanism disengages, ensuring that the gas turbine rotor can rotate freely or stop.

[0003] The clutch mechanism on most gas turbine turntables is hydraulically controlled, and includes a hydraulic pump, hydraulic cylinder, hydraulic lines, control valves, and clutch components. The clutch components, including clutch discs, pressure plates, and release bearings, are the core components for achieving the clutch function. When disengaging the clutch, the hydraulic pump draws hydraulic oil from the tank and delivers it to the hydraulic cylinder through the hydraulic lines. The piston inside the hydraulic cylinder is pushed outward by the pressure of the hydraulic oil, thereby pushing the clutch components (such as the release bearing) away from the clutch discs, achieving clutch disengagement. This type of clutch mechanism relies primarily on a hydraulic system to operate the clutch. However, hydraulic clutches have a relatively complex structure with many components, such as hydraulic pumps, hydraulic cylinders, hydraulic lines, and control valves. Therefore, when a malfunction occurs, repair is relatively difficult and costly. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a low-speed hydraulic power steering clutch mechanism for gas turbines. This addresses the shortcomings of existing steering clutch mechanisms, which primarily rely on hydraulic systems to operate the clutch. However, hydraulic clutches are relatively complex in structure, containing numerous components such as hydraulic pumps, hydraulic cylinders, hydraulic pipelines, and control valves. Consequently, when malfunctions occur, repairs are relatively difficult and costly.

[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a low-speed hydraulic power steering clutch mechanism for a gas turbine, including an inner clutch ring, which is sleeved on the outside of the steering wheel central shaft;

[0006] Also includes:

[0007] There are at least four sets of locating pins, which are movable and connected to the inner ring of the clutch.

[0008] The outer clutch ring is fitted over the outer clutch ring, and there is a gap between the outer clutch ring and the inner clutch ring;

[0009] The elastic support has at least four sets, which are used to support the positioning pin and engage the positioning pin with the positioning hole opened on the outer side of the turning gear center shaft. One end of the elastic support is movably connected to the outer ring of the clutch, and the other end of the elastic support is movably connected to the positioning pin.

[0010] The pressure plate structure, placed within the interval, is used to push the elastic support to disengage the locating pin from the locating hole when the outer ring of the clutch rotates counterclockwise.

[0011] A further improvement is that the outer clutch ring includes a rotating ring and a transmission ring. The transmission ring is fixedly connected to the front and rear sides of the rotating ring, and a movable groove is provided on the outer side of the rotating ring to allow an elastic support member to pass through and swing.

[0012] A further improvement is that the clutch inner ring includes a positioning ring, and multiple claw grooves are provided on the outer side of the positioning ring.

[0013] A further improvement is made in that: the elastic support includes a push rod and a sleeve, the push rod and the sleeve are slidably connected, a second connecting piece is provided at the end of the push rod away from the sleeve, the second connecting piece is hinged to the push rod and the positioning pin respectively by a cylindrical pin, a guide spring for supporting the push rod is provided inside the sleeve, a hinge seat is fixedly connected to the outside of the rotating ring, a first connecting piece is provided on the outside of the hinge seat, the first connecting piece is hinged to the hinge seat and the sleeve respectively by a cylindrical pin.

[0014] A further improvement is that the guide spring includes a limiting rod and a spring, a limiting hole is opened at the end of the sleeve away from the top rod, one end of the limiting rod is fixedly connected to the top rod, the other end of the limiting rod is slidably connected to the limiting hole, the spring is sleeved on the outside of the limiting rod, and the spring is fixedly connected to the top rod and the sleeve.

[0015] Further improvements are made in that: the pressure plate structure includes multiple sets of irregularly shaped pressure plates and multiple sets of claws. The irregularly shaped pressure plates are fixedly connected to the inner side of the transmission ring, and the claws are rotatably connected to the inner side of the claw groove through movable pins. One end of the claw near the rotating ring cooperates with the irregularly shaped pressure plate, and the other end of the claw is provided with a pin hole that allows a positioning pin to pass through it. The positioning pin passes through the pin hole and is fixedly connected to the claw.

[0016] A further improvement is that: the end of the pawl away from the positioning ring is provided with a guide wheel, the guide wheel is rotatably connected to the pawl, and the end of the irregular pressure plate is provided with an arc surface that cooperates with the guide wheel.

[0017] A further improvement is that the rotating ring, transmission ring, irregularly shaped pressure plate, and movable groove are integrally formed.

[0018] A further improvement is that the irregularly shaped pressure plate includes a fitting triangle plate and a disengaging triangle plate, with the fitting triangle plate and the disengaging triangle plate being staggered.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] The clutch mechanism, which adopts a positioning pin and pressure plate structure, controls the central shaft of the turning gear through forward and reverse rotation. When the brake is closed, it can stably transmit torque to ensure the normal operation of the turning gear. Moreover, the structure is simple and compact, and in case of failure, it is convenient for staff to quickly locate and repair the fault. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural diagram of the outer ring of the clutch in this utility model.

[0023] Figure 2 This is a structural diagram of the clutch inner ring in this utility model.

[0024] Figure 3 This is a structural diagram of the transfer ring in this utility model.

[0025] Figure 4 This is a structural diagram of the positioning ring in this utility model.

[0026] Figure 5 This is a utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0027] Figure 6 This is a structural diagram of the sleeve in this utility model.

[0028] Figure 7 This is a partial structural diagram of the positioning ring in this utility model.

[0029] Wherein: 1. Clutch outer ring; 101. Rotary ring; 102. Transmission ring; 103. Irregularly shaped pressure plate; 104. Hinge seat; 105. First connecting piece; 106. Movable groove;

[0030] 2. Clutch inner ring; 201. Positioning ring; 202. Paw groove; 203. Paw; 204. Guide wheel; 205. Movable pin; 206. Pin hole;

[0031] 3. Positioning pin;

[0032] 4. Elastic support component; 401. Top rod; 402. Sleeve; 403. Limiting rod; 404. Spring; 405. Second connecting piece. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] according to Figure 1 , 2 As shown in 3, 4, 5, 6, and 7, this embodiment proposes a low-speed hydraulic power steering clutch mechanism for a gas turbine, including a clutch inner ring 2, which is sleeved on the outside of the steering wheel central shaft.

[0035] Also includes:

[0036] The positioning pin 3 is provided in at least four sets, and the positioning pin 3 is movably connected to the inner ring 2 of the clutch.

[0037] The outer clutch ring 1 is fitted over the outer side of the inner clutch ring 2, and there is a gap between the outer clutch ring 1 and the inner clutch ring 2;

[0038] The elastic support 4 is provided with at least four sets for supporting the positioning pin 3 and engaging the positioning pin 3 with the positioning hole opened on the outer side of the turntable center shaft. One end of the elastic support 4 is movably connected to the clutch outer ring 1, and the other end of the elastic support 4 is movably connected to the positioning pin 3.

[0039] The pressure plate structure, placed within the interval, is used to push the elastic support 4 to disengage the positioning pin 3 from the positioning hole when the outer ring 1 of the clutch rotates counterclockwise.

[0040] The clutch mechanism is fitted outside the central shaft of the turning gear, and at least 16 positioning holes are provided on the outside of the central shaft of the turning gear.

[0041] like Figure 1 As shown, in the initial state, when the outer clutch ring 1 rotates clockwise, the locating pin 3 is pushed by the elastic support 4 and engages in the locating hole on the outside of the turning gear center shaft, limiting the turning gear center shaft and completing gear engagement. At this time, the clutch mechanism is in the closed state and can transmit torque. When the outer clutch ring 1 rotates counterclockwise, the pressure plate structure pushes the locating pin 3 and the elastic support 4 from between the outer clutch ring 1 and the inner clutch ring 2, overcoming the spring thrust of the elastic support 4, causing the locating pin 3 to disengage from the locating hole, releasing the limitation on the turning gear center shaft. At this time, the clutch mechanism and the turning gear center shaft do not interfere with each other.

[0042] The clutch mechanism, which adopts a positioning pin 3 and a pressure plate structure, can stably transmit torque when the brake is closed, ensuring the normal operation of the turning gear. It also has a simple and compact structure, making it easy for staff to quickly locate and repair faults.

[0043] Specifically, the clutch outer ring 1 includes a rotating ring 101 and a transmission ring 102. The transmission ring 102 is fixedly connected to the front and rear sides of the rotating ring 101. The outer side of the rotating ring 101 has a movable groove 106 that allows an elastic support 4 to pass through and swing. The transmission components for controlling the forward and reverse rotation of the rotating ring 101 are respectively installed on the outer sides of the two transmission rings 102, which will not be described in detail here.

[0044] Specifically, the clutch inner ring 2 includes a positioning ring 201, and multiple pawl grooves 202 are provided on the outer side of the positioning ring 201.

[0045] The positioning pin 3 is supported by the elastic support member 4, allowing it to pop out from the pin hole 206 and engage in the positioning hole on the outside of the turning gear center shaft without interference from the pressure plate structure. The elastic support member 4 includes a push rod 401 and a sleeve 402. The push rod 401 and the sleeve 402 are slidably connected. A second connecting piece 405 is provided at the end of the push rod 401 away from the sleeve 402. The second connecting piece 405 is hinged to the push rod 401 and the positioning pin 3 respectively by a cylindrical pin. A guide spring for supporting the push rod 401 is provided inside the sleeve 402. A hinge seat 104 is fixedly connected to the outside of the rotating ring 101. A first connecting piece 105 is provided on the outside of the hinge seat 104. The first connecting piece 105 is hinged to the hinge seat 104 and the sleeve 402 respectively by a cylindrical pin.

[0046] The sleeve 402 is hinged to the hinge seat 104 fixed on the outside of the rotating ring 101 via the first connecting piece 105. The guide spring inside the sleeve 402 supports the push rod 401, so that the push rod 401 can push the positioning pin 3 via the second connecting piece 405. As the clutch outer ring 1 rotates, the positioning pin 3 will engage in the positioning hole on the outside of the turning gear center shaft.

[0047] During the rotation of the clutch outer ring 1, the locating pin 3 is in both disengaged and engaged states, and its rotation path is a curve. Therefore, at the connection points between the elastic support 4 and the locating pin 3, and between the elastic support 4 and the clutch outer ring 1, there are places to support the movement of the elastic support 4 and the locating pin 3, thereby avoiding interference between the locating pin 3 and the elastic support 4 and other structures.

[0048] It is worth explaining in detail that the guide spring includes a limiting rod 403 and a spring 404. A limiting hole is formed at the end of the sleeve 402 away from the push rod 401. One end of the limiting rod 403 is fixedly connected to the push rod 401, and the other end of the limiting rod 403 is slidably connected to the limiting hole. The spring 404 is sleeved on the outside of the limiting rod 403 and is fixedly connected to the push rod 401 and the sleeve 402. When the push rod 401 is pushed into the sleeve 402, the limiting rod 403 slides along the limiting hole. The limiting hole guides the push rod 401 by cooperating with the limiting rod 403, improving the stability of the elastic support 4 during extension and retraction.

[0049] It should be noted that, in the initial state of spring 404, sleeve 402 is fitted to a depth of about 1cm at the end of limit rod 403, and limit rod 403 extends 2cm outward from sleeve 402 through limit hole. The extension distance of limit rod 403 is the detection point of clutch mechanism. In the later stage, it can be determined by detection equipment whether the turn gear is in clutch state.

[0050] Regarding the pressure plate structure:

[0051] The pressure plate structure includes multiple sets of irregularly shaped pressure plates 103 and multiple sets of pawls 203. The irregularly shaped pressure plates 103 are fixedly connected to the inner side of the transmission ring 102. The pawls 203 are rotatably connected to the inner side of the pawl groove 202 through a movable pin 205. One end of the pawl 203 near the rotating ring 101 cooperates with the irregularly shaped pressure plate 103. The other end of the pawl 203 is provided with a pin hole 206 that allows a positioning pin 3 to pass through it. The positioning pin 3 passes through the pin hole 206 and is fixedly connected to the pawl 203.

[0052] The rotating ring 101, the transmission ring 102, the irregular pressure plate 103 and the movable groove 106 are integrally formed, and the pawl 203 and the positioning pin 3 are integrally formed.

[0053] To reduce wear between the pawl 203 and the transmission ring 102 and the irregular pressure plate 103, a guide wheel 204 is provided at the end of the pawl 203 away from the positioning ring 201. The guide wheel 204 is rotatably connected to the pawl 203, and the end of the irregular pressure plate 103 is provided with an arc surface that cooperates with the guide wheel 204.

[0054] like Figure 1 , Figure 3 and Figure 4 As shown, when the positioning pin 3 on the positioning ring 201 is engaged in the positioning hole on the outside of the turning gear center shaft, it... Figure 1 Based on this, when the outer clutch ring 1 rotates clockwise, the guide wheel 204 rotates along the inner side of the rotating ring 101. The irregular pressure plate 103 contacts the guide wheel 204 and holds the pawl 203 in place, limiting its movement. At this time, the rotating ring 101 can rotate together with the positioning ring 201 and the central shaft of the turning gear. When the outer clutch ring 1 rotates counterclockwise, the irregular pressure plate 103 on the inner side of the rotating ring 101 presses against the guide wheel 204 of the pawl 203, causing the other end of the pawl 203 to lift up. The positioning ring 201 rotates, thereby overcoming the spring force and disengaging the positioning pin 3 from the positioning hole of the intermediate shaft, allowing the turning gear shaft to return to a free rotation state.

[0055] It is worth explaining in detail that the multiple sets of irregularly shaped pressure plates 103 are respectively a fitting triangle plate and a disengaging triangle plate. The fitting triangle plate and the disengaging triangle plate are staggered. The fitting triangle plate is a small triangle and the disengaging triangle plate is a large triangle. The small triangle is used to fit the positioning pin 3, and the large triangle is used to disengage the positioning pin 3.

[0056] In the preferred embodiment, the rotating ring 101, the transmission ring 102, and the positioning ring 201 are all two-half structures with a split surface. The split surface is fastened by built-in bolts or external bolts to form a circumference, which facilitates the disassembly and installation of the clutch outer ring 1 and the clutch inner ring 2 in the later stages.

[0057] How this application works:

[0058] Initially, when the outer clutch ring 1 rotates clockwise, the locating pin 3 is pushed by the elastic support 4 and engages in the locating hole on the outside of the turning gear's central shaft, limiting the turning gear's central shaft and completing gear engagement. At this time, the clutch mechanism is in the closed state and can transmit torque. When the outer clutch ring 1 rotates counterclockwise, the pressure plate structure pushes the locating pin 3 and the elastic support 4 from between the outer clutch ring 1 and the inner clutch ring 2, overcoming the spring thrust of the elastic support 4, causing the locating pin 3 to disengage from the locating hole, releasing the limitation on the turning gear's central shaft. At this time, the clutch mechanism and the turning gear's central shaft do not interfere with each other. The clutch mechanism using the locating pin 3 and pressure plate structure can stably transmit torque when engaged, ensuring the normal operation of the turning gear. Furthermore, its simple and compact structure allows for quick location and repair by personnel in case of malfunction.

[0059] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0060] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A low-speed hydraulically assisted turning gear clutch mechanism for a gas turbine, comprising a clutch inner ring (2), wherein the clutch inner ring (2) is sleeved on the outer side of the turning gear central shaft, characterized in that, Also includes: The positioning pins (3) are provided in at least four sets, and the positioning pins (3) are movably connected to the clutch inner ring (2); The clutch outer ring (1) is fitted outside the clutch inner ring (2), and there is a gap between the clutch outer ring (1) and the clutch inner ring (2); The elastic support (4) is provided in at least four sets for supporting the positioning pin (3) and engaging the positioning pin (3) with the positioning hole opened on the outer side of the turntable center shaft. One end of the elastic support (4) is movably connected to the clutch outer ring (1), and the other end of the elastic support (4) is movably connected to the positioning pin (3). The pressure plate structure, placed within the interval, is used to push the elastic support (4) to disengage the positioning pin (3) from the positioning hole when the outer clutch ring (1) rotates counterclockwise.

2. The low-speed hydraulic power steering clutch mechanism for gas turbines according to claim 1, characterized in that: The clutch outer ring (1) includes a rotating ring (101) and a transmission ring (102). The transmission ring (102) is fixedly connected to the front and rear sides of the rotating ring (101). The outer side of the rotating ring (101) is provided with a movable groove (106) that allows the elastic support member (4) to pass through and swing.

3. The low-speed hydraulic power steering clutch mechanism for gas turbines according to claim 2, characterized in that: The clutch inner ring (2) includes a positioning ring (201), and multiple claw grooves (202) are provided on the outer side of the positioning ring (201).

4. The low-speed hydraulic power steering clutch mechanism for gas turbines according to claim 3, characterized in that: The elastic support (4) includes a top rod (401) and a sleeve (402); The push rod (401) is slidably connected to the sleeve (402). A second connecting piece (405) is provided at the end of the push rod (401) away from the sleeve (402). The second connecting piece (405) is hinged to the push rod (401) and the positioning pin (3) respectively by a cylindrical pin. The sleeve (402) is provided with a guide spring for supporting the top rod (401). The outer side of the rotating ring (101) is fixedly connected with a hinge seat (104). The outer side of the hinge seat (104) is provided with a first connecting piece (105). The first connecting piece (105) is hinged to the hinge seat (104) and the sleeve (402) respectively by a cylindrical pin.

5. The low-speed hydraulic power steering clutch mechanism for gas turbines according to claim 4, characterized in that: The guide spring includes a limiting rod (403) and a spring (404). A limiting hole is provided at the end of the sleeve (402) away from the top rod (401). One end of the limiting rod (403) is fixedly connected to the top rod (401), and the other end of the limiting rod (403) is slidably connected to the limiting hole. The spring (404) is sleeved on the outside of the limiting rod (403), and the spring (404) is fixedly connected to the top rod (401) and the sleeve (402).

6. The low-speed hydraulic power steering clutch mechanism for a gas turbine according to claim 3, characterized in that: The pressure plate structure includes multiple sets of irregularly shaped pressure plates (103) and multiple sets of claws (203); The irregularly shaped pressure plate (103) is fixedly connected to the inner side of the transmission ring (102); The pawl (203) is rotatably connected to the inside of the pawl groove (202) via a movable pin (205). The pawl (203) near the rotating ring (101) engages with the irregular pressure plate (103). The other end of the pawl (203) has a pin hole (206) that allows the positioning pin (3) to pass through. The positioning pin (3) passes through the pin hole (206) and is fixedly connected to the pawl (203).

7. A low-speed hydraulic power steering clutch mechanism for a gas turbine according to claim 6, wherein the pawl (203) is provided with a guide wheel (204) at one end away from the positioning ring (201), the guide wheel (204) is rotatably connected to the pawl (203), and the end of the irregular pressure plate (103) is provided with an arc surface that cooperates with the guide wheel (204).

8. The low-speed hydraulic power steering clutch mechanism for a gas turbine according to claim 6, wherein the rotating ring (101), transmission ring (102), irregular pressure plate (103) and movable groove (106) are integrally formed.

9. A low-speed hydraulic power steering clutch mechanism for a gas turbine according to claim 6, characterized in that: The irregularly shaped pressure plate (103) includes a fitting triangle plate and a disengaging triangle plate, wherein the fitting triangle plate and the disengaging triangle plate are offset from each other.

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